Is it possible to add a custom attribute in this format to a html element.
<div class="example" editor:edit></div>
( A bit like Mailchimp's merge tags)
If so, how would I go about targeting the element, preferably with jQuery.
MDN's HTML attribute reference implies that you should never create non-standard attributes.
This is the very purpose of the data-*
attribute, which description in the list is: Lets you attach custom attributes to an HTML element.